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Synchronization of dipole domains in GHz-driven superlattices

Proc. SPIE 5023, 220 (2002); http://dx.doi.org/10.1117/12.513815

10th International Symposium on Nanostructures: Physics and Technology
Zhores I. Alferov, Leo Esaki
A. K. Jappsen, A. Amann, A. Wacker, and E. Schoell

Technische Univ. Berlin (Germany)

Ekkehard Schomburg

Univ. Regensburg (Germany)

We consider a semiconductor superlattice biased into the regime of negative differential conductivity and driven by an additional GHz ac voltage, and find frequency-locked or quasiperiodic propagating field domains. With increasing driving frequency, the complex impedance exhibits strong variations of its amplitude and phase. An anomalous phase shift appears as a result of phase synchronization of the traveling domains.

© 2003 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

History
Online Oct 09, 2003
Citation
A. K. Jappsen, A. Amann, A. Wacker, Ekkehard Schomburg and E. Schoell, "Synchronization of dipole domains in GHz-driven superlattices", Proc. SPIE 5023, 220 (2002); http://dx.doi.org/10.1117/12.513815

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